You have great products in your routine already 🙌.
One active to consider for anti-aging is a retinoid. If you are up for a luxury product, this one uses the most potent form of retinoids available over the counter:
A more budget version with a different (but still effective) type of a retinoid:
The most affordable option:
If you add a retinoid serum, you could skip the Jane Iredale BeautyPrep Hyaluronic Serum and/or SkinMedica TNS Advanced+ Serum to make space in your routine and free up some budget. These are good products, but a retinoid would give you more visible results.